package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @version 1.0
 * @Author YanJingren
 * @Date 2021/3/4
 * @Description com.atguigu.springcloud.service
 */
@Service("paymentService")
public class PaymentServiceImpl implements IPaymentService {

    /**
     * 正常访问，肯定ok
     * @param id
     * @return
     */
    @Override
    public String paymentInfo_ok(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_ok, id：" + id +"\t" + "O(∩_∩)O";
    }

    @Override
    @HystrixCommand(fallbackMethod = "paymentInfo_timeout_handler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfo_timeout(Integer id) {
        int timeNumber = 3;
//        int age = 10 / 0;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_timeout, id：" + id +"\t" + "O(∩_∩)O" + "\t耗时" + timeNumber + "秒";
    }

    public String paymentInfo_timeout_handler(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_timeout_handler, id：" + id +"\t" + "o(╥﹏╥)o";
    }

    //======服务熔断======
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),  // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), // 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),   // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")    // 失败率达到多少后跳闸
            // 10秒钟(10000毫秒)内，10次访问，6次失败，则会跳闸限电
    })
    public String paymentCircuitBreaker(Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id 不能为负数******");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号：" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id不能为负数，请稍后再试，o(╥﹏╥)o，id：" + id;
    }

}
